EE the 4g provider touting biggest 3G network.

Stores are now rebranded with now with Ee, orange and t-mobile but if that’s not confusing enough their advertising, in my local store at least, is pushing the strap line “the biggest 3G network”

So lets recap. Ee is everything everywhere that’s consisting of orange and t-mobile and are best known for a 4g network and is pushing 3G? Wonder is this is a regionalisation thing?